Results 131 to 140 of about 207,688 (313)

A contra-rotating marine current turbine on a flexible mooring : development of a scaled prototype

open access: yes, 2008
The contra-rotating marine current turbine concept developed by the Energy Systems Research Unit at the University of Strathclyde is aimed at extracting energy in a wide range of water depths by 'flying' a neutrally-buoyant device from a flexible ...
Clarke, Joseph Andrew   +6 more
core  

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt   +6 more
wiley   +1 more source

Active radial clearance design method based on customized linear expansion coefficient

open access: yesHangkong gongcheng jinzhan
The active clearance control (ACC) technology for compressors in aero engines has slow deformation response, which is not suitable for military aero engines with drastic changes in throttle lever, and leads to the problem of excessive radial tip ...
ZHANG Shaoping   +2 more
doaj   +1 more source

Gas Turbine Engine Performance Deterioration Modelling and Analysis [PDF]

open access: yes, 1988
In-service performance deterioration of gas turbine engines can be identified, at the engine module level, in terms of reductions in the component mass flow and the efficiency. Continued operation of a deteriorated gas turbine is (i) uneconomical and
Singh Grewal, M.
core  

Embedding Chemistry and Pharmacy Into Sustainability

open access: yesAngewandte Chemie International Edition, EarlyView.
Chemistry and pharmacy provide products and processes that are indispensable for our high living standard. To understand their relationship with sustainability is important to allow them to contribute to sustainability in a sustainable manner. An integrated overview of green, circular, and sustainable chemistry and pharmacy is given and how they have t
Klaus Kümmerer
wiley   +1 more source

The numerical representation of pump-turbine performance characteristics [PDF]

open access: yes
This thesis investigates the hydraulic transient analysis of hydro-power plants with particular emphasis being placed on the turbine and pump-turbine boundary conditions.
Walmsley, Nigel
core  

Thermal Calculations for Co‐Firing of Hydrogen/Ammonia and Coal in 660‐MW Coal‐Fired Boilers

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To achieve a clean energy transition under the dual carbon goals, blending hydrogen/ammonia into pulverized coal boilers represents a key technological pathway. Different hydrogen/ammonia co‐firing ratios (5%–50%) are investigated for their impact on the thermodynamic characteristics of 660‐MW supercritical boiler at 100% and 20% boiler ...
Yaodong Da   +7 more
wiley   +1 more source

Assessing biomass-fired gas turbine power plants: a techno-economic and environmental perspective [PDF]

open access: yes, 2013
Fossil fuels continue to deplete with use as they are irreplaceable. In addition, the environmental impact with the continuous use of these conventional fuels has generated global concern due to the production of harmful emission gases. An alternative
Ihiabe, Daniel
core  

Micro gas turbine range extender : validation techniques for automotive applications [PDF]

open access: yes
A Micro Gas Turbine (MGT) can be considered as an alternative to the internal combustion engine as a range extender for electric vehicles. The MGT produces less raw exhaust gaseous emissions such as HC and CO in aerospace and static applications compared
McGordon, Andrew   +3 more
core   +1 more source

Research on Diaphragm Pump Fault Diagnosis Method Based on Res‐DCB‐Net

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Nonstationary pressure pulsation signals of diaphragm pumps contain strong background noise and coupled characteristics. This makes it challenging to extract incipient fault features and to decouple faults with similar physical mechanisms. To address these limitations, this paper proposes a spatiotemporal fault diagnosis model named Res‐DCB ...
Jiahui Wang   +7 more
wiley   +1 more source

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